System Generating Practice Test When Not in Use

I’ve generated and completed a few Practice Tests today, however, I checked the usage in settings just now, and there seems to be a problem.

The system has been generating 6 Practice Tests in a row for a few times now (using 5×6=30 energy each time, for 6 tests at a time). I’m concerned it might just keep on automatically generating practice tests and using up my energy to generate materials.